Edgar peckham



(No Model-) H PEGKHAM.

ELEGTRIG'GA-R AXLE. No. 420,545. Patented Feb. 4, 1890-.

N u R;

WITNESSES: INVENTOR' a. i v

UNITED STATES PATENT OFFICE.

EDGAR PEGKHAM, OF NEIV YORK, N.

ELECTRIC-CAR AXLE.

SPECIFICATION forming part of Letters Patent No. 420,545, dated February 4, 1890. Application filed June 7, 1889. Serial No. 313,441. (No model.)

To all whom it may concern:

Be it known that I, EDGAR PEOKHAM, of New York, in the county of New York, in the State of New York, have invented new and useful Improvements in Electric-Car Axles, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention has reference to the truckaxles of electrically-propelled cars; and the object of the invention is to impart greater stability and durability to said axles, and to provide more effective and reliable means for sustaining the driving gear-wheel and motor-frame in their respective positions on the axle; and to that end the invention consists in the novel construction of the axle, as hereinafter fully described, and specifically set forth in the claims.

In the annexed drawings, Figure l is a plan View of an electric-rnotor-car axle embodying my improvement. Fig. 2 is a transverse section on lineoc as, Fig. 1. Fig. 3 is a longitudinal section on line y y, Fig. 2, and Figs. 4 and 5 are detached end views of the expansible and contractible collar.

A represents the axle, on which are mounted the usual gear-wheel B and one end of the motor-frame C, as indicated by dotted lines in Fig. 1 of the drawings. In order to obviate weakening the axle by cutting therein the requisite seat a for the key by which the gear-wheelB is fastened to the axle, and to also impart additional strength to said portion of the axle, I provide the same with a wheel-seat b, of a greater diameter than the main portion of the axle, and preferably form it integral therewith, and in this enlarged wheel-seat I out the key-seat c. To positively prevent'the wheel from shifting longitudi nally on its aforesaid seat I form the axle with a collar d on the outer end of the wheelseat I), and of a greater diameter than the latter, so as to present an abutment to the exterior of the Wheel-hub.

' The inner end of the wheel-seat b, I terminate abruptly to form an abutment c for the adjacent side of the motor-frame 0. Against the opposite side of said frame abuts a collar ,which is attached to the axle adjustably longitudinally, so as to allow it to be set up closely to the side of the frame 0 and take up the wear between the sides of the motorframe and its aforesaid ab utments. The said adjustable collar is made expansible and contractible, either by cutting through itat one point and providing it thereat with perforated ears f f through which the clampingbolt h passes, as shown in Fig. i of the drawings, or said collar may be divided transversely into two parts provided with perforated ears having clamping-bolts. passing through them, as represented in Fig. 5 of the drawings. In either case the said collar is screw-threaded internally and is clamped onto a correspondingly screw-threaded portion 11 of the axle, and this portion I prefer to form of a larger circumference than the main portion of the axle, for the purpose of facilitating the operation of cutting the screw-threads therein and also for strengthening the axle. The collar f is readily adjusted in its position by loosening the clamping-bolt h and then turning the collar on its screw-threaded seat on the axle until it is brought to the desired position, in which it is retained in tightening the clamping-bolt h.

WVhat I claim as my invention is 1. An electric-motor-car axle formed with a gear-wheel seat of a greater diameter than the main portion of the axle, and with akeyseat in said wheel-seat, and an abutment on the outer end of the wheel-seat, as and for the purpose set forth.

2. An electric-motor-car axle formed with a gear-wheel seat of .a greater diameter than the main portion of the axle, and with abutments at opposite ends of the said seat, respectively, for the hub of the gear-wheel and for the motor-frame, substantially as described and shown.

3. An eleetric-motor-car axle provided with the screw-threaded portion 2' adjacent to the motor-frame bearing .on said axle, and an expansible and contractible collar screwthreaded internally and clamped adjustably onto the aforesaid screw-threaded axle portion, substantiallyas described and shown, for the purpose set forth.

4. An electrio-motor-car axle formed with the screw-threaded portion 7 adjacent to the motor-frame bearing and of a greater diameter than the main portion of the axle, and an expansible and contractible collar screwthreaded internally and clamped adjustably axle portion, substantially as described and 10 onto the aforesaid screw-threaded axle porshown. tion, substantially as set forth. In testimony whereof I have hereunto 5. An electrie-motor-ear axle formed, with signed my name this 1st day of June, 1889. a rigid abutment at one side of the motoro frame bearing, and with a screw-threaded EDGAR PECKHAM portion at the opposite side of said bearing, \Vitnesses: and an expansible and contractible collar (3.1T. DUELL,

clamped arljustably on said screw-threaded II. M. SEAMANS. 

